Synonyms of foolproof

foolproof

adjective

as in perfect

done, made, or planned so well that nothing can go wrong

a foolproof plan

DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.

Synonyms & Similar Words

• perfect
• flawless
• reliable
• infallible
• sure
• unfailing
• unerring
• certain
• inerrant
• faultless
• dependable
• impeccable
• errorless

Antonyms & Near Antonyms

• defective
• imperfect
• faulty
• flawed
• unreliable
• undependable
• fallible